850 Park Avenue, Manhattan
A 1914 elevator apartment building in the Upper East Side Historic District historic district, on Park Avenue, zoned R10.
850 Park Avenue is an elevator apartment building in Manhattan, New York City (BBL 1013910040). The property is zoned R10, on a 15,835 sq ft lot, with 12 floors and 52 residential units. It was built in 1914. The lot is not inside a FEMA Special Flood Hazard Area. NYC municipal records show 1 open building violation for this lot as of 2026-07-05.
Property facts
| BBL | 1013910040 |
|---|---|
| Borough | Manhattan — Community District 8 |
| Neighborhood | Upper East Side-Carnegie Hill |
| Zoning district | R10 |
| Building class | D4 — elevator apartment building (what’s a building class?) |
| Land use | 03 — Multi-family elevator buildings |
| Lot area | 15,835 sq ft |
| Floors | 12 |
| Residential units | 52 |
| Year built | 1914 |
| FAR | 9.41 built · 10 max residential · 0 max commercial Learn: What is FAR? |
| Historic district | Upper East Side Historic District |
| Flood zone | Not in a FEMA Special Flood Hazard Area |
Public records
- 0 open Department of Buildings violations
- 0 open ECB (OATH) violations
- 1 open Housing Preservation & Development violation
- Façade safety filing status: SAFE (latest filing 2026-02-02)
Violation counts as of 2026-07-05.
Absence of a record means none on file in NYC municipal records — not a certification of compliance.
The complete dossier also covers:
- Buildable floor area (residential & commercial)
- Recorded ownership & last sale
- Recorded mortgages & open debt stack
- LL97 carbon exposure by compliance period
- Flood coverage percentage & base flood elevation
- Climate projections for this lot
- Open permits & construction pipeline
- Distress signal convergence
- Air rights & transferable development rights
- Comparable sales (Pro)
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Data: NYC municipal records (Departments of City Planning, Buildings, Finance) and FEMA. See our sources and methodology. Data as of 2026-07-11.